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Your search has returned 19 articles:
  • News

    Lowering lilies on the tree of life

    New genetic analyses are shaking the lowest living branch on the family tree of flowering plants. The question is: Should we move water lilies down to that ancient lineage?

    Last summer, presentations at the International Botanical Congress in St. Louis redrew the notoriously puzzling base of the tree. On the lowest branch that still has a living sprout, they placed a living...

    08/10/2004 - 17:51 Plants
  • News

    Infectious stowaways

    While in port, shipping vessels often suck huge quantities of water into their ballast tanks to replace the stabilizing weight of cargo they've off-loaded. Along with this water comes abundant aquatic life, such as mussels and crabs, which journey with the ships—often crossing entire oceans—until the ballast is dumped in preparation for loading new goods.

    Largely ignored in this lively...

    08/10/2004 - 17:48 Earth & Environment
  • News

    Problems with eradicating polio

    Twelve years ago, the World Health Organization launched the Global Polio Eradication Initiative, with 2000 as its target for eliminating the crippling scourge. At that time, an estimated 350,000 new cases of polio emerged each year. Though the incidence of polio has been dropping dramatically, even in this deadline year, 10 new cases crop up daily somewhere within the 30 countries where the...

    08/10/2004 - 17:46 Earth & Environment
  • News

    Cancer cells on the move

    A gene recently linked to liver, skin, and pancreatic cancer also lies behind an often deadly form of breast cancer. A new study suggests how that gene causes such aggressive cancer.

    Inflammatory breast cancer accounts for about 6 percent of new breast cancer cases in the United States each year. By the time it's diagnosed, the disease has typically spread to other parts of the body....

    08/10/2004 - 17:44 Biomedicine
  • News

    Boldly into the breech controversy

    Addressing a long-simmering controversy, a large new study has shown that in pregnancies where the baby has positioned itself to emerge feet or buttocks first, the delivery safest for mother and child is a planned cesarean section, or C-section, rather than a vaginal birth.

    In 3 to 4 percent of all pregnancies, the babies end up in the so-called breech position.

    Some physicians...

    08/10/2004 - 17:43 Biomedicine
  • News

    Blame the brain for lack of rhythm

    From New Orleans, at the annual meeting of the Society for Neuroscience

    At the other end of the musical talent scale from those with perfect pitch are people with dysmusia, a condition marked by difficulty learning to play music or recognizing melodies. It's essentially a musical version of dyslexia, the well-recognized reading disability.

    On rare occasions, a person suffering a...

    08/10/2004 - 17:31
  • News

    Perfect pitch common among the blind

    From New Orleans, at the annual meeting of the Society for Neuroscience

    Stevie Wonder. Ray Charles. Jose Feliciano. Because of such legends, there's a perception that blind people make great musicians. Scientists do have some evidence from blind people that brain areas normally devoted to vision become involved in hearing or in controlling the dexterity needed to play an instrument. A...

    08/10/2004 - 17:29
  • News

    A vaccine to help ex-smokers

    From New Orleans, at the annual meeting of the Society for Neuroscience

    By generating antibodies that neutralize nicotine, a vaccine could keep ex-smokers from getting the nicotine high that drives many of them back to their bad habit, according to a group of neuroscientists.

    "Our focus is to prevent a relapse," says Sabina de Villiers of the Karolinska Institute in Stockholm....

    08/10/2004 - 17:27 Biomedicine
  • News

    Caffeine may ward off Parkinson's

    From New Orleans, at the annual meeting of the Society for Neuroscience

    Call it Starbucks science. Two new studies provide a potential explanation for how coffee may protect the brain from the ravages of Parkinson's disease, an illness that produces speech and coordination difficulties.

    Hints that coffee has some protective value against the disease, which kills nerve cells that...

    08/10/2004 - 17:25 Biomedicine
  • Feature

    When the Chips are Down

    Competition to make computer chips smaller, faster, and cheaper has fueled U.S. economic growth, driven a technological revolution, and made your once-flashy personal computer a relic in 2 years' time.

    Experts, however, predict this march toward miniaturization will hit a wall by about 2010. That's when transistors as we know them will...

    08/10/2004 - 17:17 Technology